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Noninvasive detection of fetal trisomy 21: systematic review and report of quality and outcomes of diagnostic accuracy studies performed between 1997 and 2012.
Mersy E, Smits LJ, van Winden LA, de Die-Smulders CE; South-East Netherlands NIPT Consortium; Paulussen AD, Macville MV, Coumans AB, Frints SG. Mersy E, et al. Hum Reprod Update. 2013 Jul-Aug;19(4):318-29. doi: 10.1093/humupd/dmt001. Epub 2013 Feb 8. Hum Reprod Update. 2013. PMID: 23396607 Review.